This research is motivated by the low level of students’ mathematical creative thinking ability, which is caused by low student engagement during the learning process and a lack of understanding of mathematical concepts. This study aims to determine the effect of the GeoGebra-assisted Problem-Based Learning (PBL) model on improving the mathematical creative thinking ability of students. This research employs a quantitative approach with a quasi-experimental method. The subjects of this study were class VIII A as the experimental group and class VIII B as the kontrol group. Data collection techniques included a post-test and an observation sheet to measure the implementation of the learning process. Based on the research findings and discussion, it can be concluded that the implementation of the GeoGebra-assisted Problem-Based Learning (PBL) model can enhance the mathematical creative thinking ability of students. This is evident from the significant difference in the average post-test scores between the experimental and kontrol classes.
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